The Allen-Bradley 1777-IA AC Input Module is a reliable component designed to interface ON/OFF devices with Allen-Bradley programmable controllers within the 1771 Universal I/O structure. This module is compatible with various Allen-Bradley products and is easy to install, making it a versatile and convenient option for your project.
Key Features
- Input Voltage: 120V AC/DC
- Number of Inputs: 8
- Operating Voltage Range: 87-138V AC; 97-138V DC
- Backplane Current Load: 75 mA
- Signal Delay: 24 ms (AC On/Off); 10 ms (DC On); 20 ms (DC Off)
- Off-State Current: Maximum of 2.8 mA
- Wiring Arm: 1771-WA
Applications
The 1777-IA module is suitable for interfacing with various ON/OFF devices, including:
- Limit switches
- Pushbuttons
- Motor starters
- Pilot lights
- Annunciators
Additional Information
This module features electrical-optical isolation and filter circuits to provide system protection and aid in troubleshooting. Module indicators are provided to show input or output status, enhancing system diagnostics. The 1777-IA is compatible with all current Allen-Bradley programmable controllers, offering flexibility and ease of integration.
For installation, the module requires a field wiring arm (part number 1771-WA), allowing for easy replacement without disconnecting wires. Its compact design ensures efficient use of space within the control system.
In summary, the Allen-Bradley 1777-IA AC Input Module is a dependable and efficient solution for integrating ON/OFF devices into your industrial automation system, providing robust performance and ease of use.
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